Results |
 
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Results |
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The maximum SCR bending stress, von Mises stress and bending strain are the critical results. The sagbend region is the key SCR location. The first figure below shows a plot of von Mises stress as a function of distance along the riser. The second figure below shows a corresponding plot of bending stress, while the third figure below shows the bending strains. Noticeable peaks of stresses and strains can be observed approximately 1150m along the riser, corresponding naturally to the touchdown region.
Von Mises Stress Envelope
Bending Stress Envelope
Bending Strain Envelope
To avoid buckling it is essential that the riser does not go into significant compression at any point. The below figure shows the dynamic effective tension envelope, which shows that the riser remains in tension throughout.
Effective Tension Envelope
The clearance of the winches in their respective moonpools is also critical. Minimum clearances between the winches and moonpools are shown in the Winch Clearances Table below. Clearance timetrace plots from Clear are given in the Installation Winch Clearance figure and the FPU Winch Clearance figure below.
Winch Clearances
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Minimum Clearance from Moonpool (m) |
Installation Winch |
6.7 |
FPU Winch |
24.5 |
Installation Winch Clearance
FPU Winch Clearance